apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: jupyter-netpol
  namespace: {{ .Release.Namespace }}
  labels:
    app: jupyter
    tenant: 'tenant-{{ .Values.name }}'
spec:
  podSelector:
    matchLabels:
      app: jupyter
      tenant: 'tenant-{{ .Values.name }}'
  policyTypes:
    - Ingress
    - Egress

  # Entrée : Autorise le trafic vers le Notebook Jupyter sur le port 8888
  ingress:
    - ports:
        - protocol: TCP
          port: 8888

  # Sortie : Restreint les communications aux composants strictement nécessaires
  egress:
    # 1. Résolution DNS dans kube-system
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: kube-system
      ports:
        - protocol: UDP
          port: 53
        - protocol: TCP
          port: 53

    # 2. Flux vers l'API MinIO (Stockage S3)
    - to:
        - namespaceSelector:
            matchLabels:
              kubernetes.io/metadata.name: minio
      ports:
        - protocol: TCP
          port: 9000